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Changelog
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Changelog
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version 0.6.2 (25/1/2010)
- Sync-up with mainline version which includes changes below.
- Lots and lots of cleanups.
- Use small case for ramzswap module parameter: NUM_DEVICES -> num_devices.
- Add three module parameters: backing_swap, memlimit_kb and disksize_kb to
allow initializing the first device (/dev/ramzswap0) without using
rzscontrol utility (see Issue #50).
- Use 'struct page' instead of 32-bit PFNs in ramzswap driver and xvmalloc.
This is to make these 64-bit safe.
- xvmalloc is no longer a separate module and does not export any symbols.
Its compiled directly with ramzswap block driver.
- Removed useless {load,unload}_modules.sh scripts.
- Fix to make sure disksize matches usable pages in backing swap file.
- Fix memory leak in (rare) error condition in init_device().
- Fix memory leak in (rare) failure in create_device().
- Remove swap discard hooks. Swap notifiers makes these redundant.
- Unify init_device() fail path and reset_device().
- Do not accept backing swap with bad pages.
- Fix zero-page accounting.
- Use lock for 64-bit stats to prevent value corruption.
- Rewrite swap notify patch.
- Fix crash when reset is called when there are pending I/Os.
version 0.6 (20/8/2009)
- Re-init notify callback to NULL on device reset.
- Use block_device to set notify callback.
- Proper locking in set_swap_free_notify() callback.
version 0.6pre3 (6/8/2009)
- Fix invalid stats reporting on ARM (Issue 34).
- Add KERNEL_BUILD_PATH option to Makefile (Issue 35).
- Experimental support for 'swap free notification' feature.
See README for details.
- Patch for Linux kernel 2.6.31-rc5 to support notify feature.
- Removed compatibility with kernels older than 2.6.28. This
resulted in lot of cleanups.
version 0.6pre2 (21/7/2009)
- Fix crashes on ARM (Issue 33).
- Close backing swap file on device reset.
- Do not change backing swap device block size.
- Reset stats on device reset.
- Do not allow active device to be reset.
- Set ramzswap SSD flag only if backing swap if SSD.
version 0.6pre1 (14/7/2009)
- Support for multiple ramzswap devices.
- Support for *file* as backing swap.
- New rzscontrol utility to control individual
ramzswap devices.
- Manual page for rzscontrol.
- Removed {use,unuse}_compcache.sh scripts.
- Above replaced with {load,unload}_modules.sh
scripts as all other work is now done with rzscontrol.
version 0.5.3 (8/4/2009)
- Major cleanups.
- Rename module: compcache.ko -> ramzswap.ko
- Rename params: backing_dev -> backing_swap
- Updated use_compcache.sh script with detailed
documentation on parameters.
- LZO de/compress modules are no longer packaged
with compcache. Most distros now include these.
version 0.5.2 (11/3/2009)
- Can forward incompressible pages to physical swap disk.
- New module params:
- memlimit_kb
- disksize_kb
- backing_dev
See use_compcache.sh for documentation on these params.
- Modified use_compcache.sh script to handle new params.
- Detect zero-filled pages and don't allocate any memory
for them.
version 0.5.1 (22/1/2009)
- Fix crash on x86 systems with higmem (mem > ~1G).
This required minor changes to atomic (un)map functions (see Issue #20).
version 0.5 (16/1/2009)
- Fix crash in case compcache init fails.
version 0.5pre4 (10/1/2009)
- Support discarding pages for freed swap blocks (requires 2.6.28-git14).
This feature will be disabled if compiled for older kernel.
- Mark ramzswap as "solid-state" block device (requires 2.6.26-git14).
- Fixed incorrect stats reporting in /proc/compcache (some
new stats added too).
version 0.5pre3 (5/1/2009)
- Use kmap_atomic() in xvMalloc. This fixes issue #19
- Remove xvMapPage() and xvUnmapMap() from xvMalloc.
version 0.5pre2 (28/10/2008)
- Alloc full page for uncompressible pages instead
of returning I/O error.
- Warn users when using ramzswap > (2 x RAM size)
version 0.5pre1 (15/10/2008)
- Replaced TLSF with xvMalloc memory allocator
http://code.google.com/p/compcache/wiki/xvMalloc
version 0.4 (13/8/2008)
- Enable debug and stats option for compcache and tlsf by default
proc nodes: /proc/{tlsfinfo,compcache}
- Fix crash when reading /proc/tlsfinfo
- Lots of cleanups: clean compile on x64
version 0.3 (17/3/2008)
- Fix spurious swap read failures
- Better swap request filtering
- Swap device again renamed to /dev/ramzswap0
This is to prevent Ubuntu installer from presenting
this device as possible installation target (see Issue #5)
- use_compcache.sh script now waits for disk node to be created
instead of arbitrary sleep (see Issue #6).
- Modified scripts: use_compcache.sh and unuse_compcache.sh
to now use new device name (compcache0 -> ramzswap0).
version 0.2 (3/3/2008)
- Fixed bug on systems with highmem
- Better filtering-out of non-swap requests
- Export statistics through proc nodes:
- /proc/compcache
- /proc/tlsfinfo
- Debug and Statistics support for allocator
and compcache can now be individually turned
on/off by setting DEBUG, STATS to 0/1 in
respective header files
- Swap device now renamed to /dev/compcache0
- Added scripts: use_compcache.sh and unuse_compcache.sh
See README for usage
- Default compcache size set to 25% of RAM
- Lots of code cleanups
- Updated README
- Created Changelog :)